High-pressure-pipe hinge.



F. L. MQGAHAN.

HIGH PRESSURE PIPE HINGE.

APPLICATION FILED NOV. 3, 1911.

1,056,762. I Patented M21118, 1913.

HI I

WITNESSES "ms/non nrrbmsrs UNITED STATES 1 PATENT OFFICE.

FREDERICK LUTHER MCGAHAN, OF ST. LOUIS, MISSOURI.

' HIGH-PRESSURE-PIPE HINGE;

Continuation ofapplication Serial No. 329,525, filed August 7, .1906. This application filed November 3, r

' Specification of Letters Patent.

Patented Mar'.'1s,*1913.

1911. Serial No. 658,838

Toullw hom it may concern:

Be it known that I, FREDERICK L. MGGAHAN, a -citizen ofthe United States,

and a resident of St. Louis, in the State of minimum degree of leakage when subjected to high fluid pressure. I p

Reference isto be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1- is a central. vertical section through my improved pipe hinge, showing the relative arrangement of the pipe sections,

the coupling section, the various rings and packings, and the adjustments for thepackings;-Fig. 2 is acentral vertical section upon the line 22'in Fig. 1 ,-lo0king in the direc tion of the arrow, and showing particularly the sectors 14, together forming a packing ring, and also showing the screws 13. for adjusting the sectors; Fig. 3 is a vertical central section uponthe line 3-3 in Fig. 1, looking in the direction of thearrow, this view having parts partially broken away and showing a split packing ring 27 provided with sectors 28, the sectors together forming a composite packing; Fig. 4 is an enlarged fragmentary section upon the line H in Fig. 3, showing one of the threaded stems 35 used for adjusting-the sectors 28 relatively to the-inner surface of the sleeve 19' encircling the same; F 5 is a fragmentary section of the packing ring 27, defined by the line ,5--5'inFig. *8, showing the. location therein of the sectors 28, and together forming an annularpacking'each sector being pro-Videdwithe continuous bevel sur-' face 33 to enable these sectors tohe adjusted; Fig. .6 IS a fragmentary side elcva tion artl brokenawa i and showing one of the threaded stems 35, together with the parts carried by. it; Fig. 7 is an elevation of the packing ring 27 fitted with packing sectors 28,,the latter forming together a composite packing of general annular form. The pipe sections to. be. coupled are shown at 7, 8, the. section .8 being provided with an enlarged end portion 8threaded internally as indicated in Fig. 1. These sections 7 8 v 'are also threaded internally at 9, 10, for the purpose of enabling them to bescrewed upon other pipesections ortubu lar members. A cap 11, threaded internally, is provided with apertures 1-2, spaced equidistant, asindicated in Fig. 2. Passing throughportions of the cap 11 and located centrally within the apertures 12 are-adjusting screws 13 converging toward the center ofthe cap. A number of sectors 14.- of arcuate form are provided with lapping end 15 and with' indentations .16. screws 13 pass into the indentations 16 and are adapted to forcethe middle portions of the respective sectors towardthe center of the pipe section 7".- Each sector 14 is made of resilient material, preferably spring. metal, and normallybows outward a little The so as tobe corrected by the pressure of the flange 1.9 is the enlarged portion 8 -of the pipe section 8, this enlarged portionbeing likewise threaded internally. A ring 21 is lodged against the flange 20, which thus constitutes a sort of shoulder for the coupling section 17. An annular sleeve 22 engages 'the ring 21 and is provided with an annular flange 23 projecting outwardly. A ring 24 fits against the annular flange 23' and is engaged directly by' the central por tion of the cap 11, this cap, being secured 105 firmly upon the coupling section 18, is not loosened by movements of the screws 13,

except in so far asthese screws may control the sectors-14; considered as partsof a composite packing.

The i'nnerend of the pipe section 'Zfils.

' ring. Each sec'tor'28 is provided with lapping ends 29, eachsector forming a slip joint. 30 with the adjacent end of the next a sector. The ring 27 is split diagonally, be

ing thus provided. withfbevels '31 mating each other. The ring 27, aside from the ac- 'tion of the sectors 28, acts a good deal like an ordinary acking ring, but the sectors 28 serve to ren er the ring more nearly airtight or gastight than would otherwise be the case. These sectors 28.have such .curvature as correspondsexactlywith the, curvature of the inner surface of the sleeve '19. The annular groove in the ring 27 is shown at 32 in Fig. 5. Each sector 28 is rovided internally with a continuous beve ed edge 33. The ring 27 has apertures 34, the centers of which register with the threaded stems 35. Mounted revolubly u on each threaded stem 35 is a cam nut 36, threaded internally and fitting'neatly but not tightly into one of the apertures 34. Each threaded stem 35 is further provided with a-lock nut 37, also .revolubly mounted thereupon." The cam nut .36 is provided with a frusto-conical portion 38, the several portions 38 fitting against theedges' 33'of the sectors 28 The middle portion of the cam nut 36 is cylin-' drical, and is adapted to engage directly the bottom of the groove 32, as will be understood from Fig. '4. This arrangement enables the cam nuts 36 to exert great lateral pressure radially outward against the inner or bevel surfaces 33 of the sectors 28. The cam nuts 36 being adjusted to any. desired pressure, the lock.nuts 37 are tightened and the screws 35 areunable to work loose. v

My device is assembled as follows: First the annular cap 11 is slipped over at art of the pipe section 7 and brought to t e left of the position indicated in Fig. 1. The ring' 24, the sleeve 22 and'the ring 21 are next. slipped onto the pipe section. Next the coupling section17 is slipped on, but as the cap 11 1s considerably to the left of the positlon indicated in Fig. 1, the annular head 25 projects a little 'to the right of the ex- .tre'me right-hand portion of the flange 19.

The ring 21 is next fitted with the sector 28and the screws 35, the latter, however, being turned so as to leave the sectors 28 a little loose. The rin 27 and itp 'accompanying partsare-nex forced over the beveled annular head 25 and caused to snap into place around the neck 26.- The coupling section 17 is next moved up against the ring 27, or, in other words, moved to the rig ht according to the view shown in Fig.

1, and the ring 27, the sleeve 22, the ring 24, and the cap 11 are all moved to the right, the cap 11' being ,turned so as to force it .closely ,to the right relatively to the 'coupling section 17, thus tightenin therings 21, 24 and the sleeve 22 firmly in position.

The screws 13 and the cam nuts 36are now USB.

Either of the pipesections 7, 8 maybe turned angularly with reference to each other upon an axis which coincides with the geometrical axis of the coupling section 17; By adjusting the sectors 14 and 28. by

.: means of the screws 13 and cam nuts 36,

wear may be compensated-from time to time,

expansion and contraction due to varying;

temperatures may becompensated, and all irregularity in' the fitting of the parts may be virtually remedied.

Having thus' described my invention, I.

claim as new and desire to secure by Letters- Pittent:

. 1. The combination of a'pipe section, a coupling section encircling said pipe section and swiveled relatively thereto, ,a packing ring disposed intermediate of said coupling section and said pipe section, a packing mounted within said packing ring, and

means controllable at will for adjustin the I general diameter of said to said couplin section. v

2. The combination of a pipe section, a member encircling the same and swiveled relatively thereto, said member being provided with an annular groove, a pluralityof spring sectors having overlapping ends and mounted within said groove and together forming a composite packing ring, and screws mounted within said member and packing I relat vely respectively engaging said sectors for the purpose of. adjusting'the same relatively to said pipe section.

3. A device of .the character described,:

comprising a pipe section, an annular member swiveled relatively thereto, a packing ring disposed intermediate of said pipe section and said annular member, said packingring being provided with a groove, a plurality of sectorsprovided with overlapping ends and disposed within said groove so as packing ring disposed adjacent to' said cou-.

metal encircling said neck, an annular member encirchng said spring packing ring, a

packing mounted within said spring pack-r 'ing ring and engaging said annular member,

and means controllable at will for adjusting the general diameter of'said packing ring.

5. Thecombination of a pipe section provided with a neck, a ring encircling said neck and provided with a groove, a plurality of sectors provided with overlapping ends and mounted within said groove so as toform a composite packing of annular form, screw mechanism mounted within said ring andmovable relatively thereto for adjusting said sectors relatively to said ring, and an annular member encircling said pipe section and swiveled relatively thereto, said annular member being engaged directly by said sectors. j a

6. The combination of a pipe section, a

coupling section connected therewith, a

packing ring disposed within said coupling section, a packing within said packing ring, a pipe'section inserted partially within said coupling section and engaging said packing ring, and" means controllable at will for ad- \justing said packing relatively tosaid coupling section.

' 7. The combination of a pipe section, a coupling section connected therewith, a

plingsection and provided with a movable packing, means controllable at will for adjusting said packing relatively to said packing ring, and a second pipe section connected with said packing ring.

8. In a pipe hinge, the combination of a pipe section, a coupling section connected therewith, a packing ring mounted within said coupling section, a packing mounted within said packing ring, means controllable at will for adjusting said packing relatively to said packing ring, and a pipesection extending through said packing ring and provided with a surface for engaging the same directly. 7

9. In a plpe hinge, the combination of a coupling section, a capmounted thereupon and provided with an annular groove, a

packing mounted within said groove and made up of separate sections having overlapping ends, separate screws for adjusting said sections at will, and a pipe section ex- I tending through said cap and engaged by said sections. Q

10. In a pipe hinge, the combination of a coupling section, a pipe'section, a packing ring disposed intermediate of said coupling section and said pipe section, said packing ring being provided with a roove,-pins mounted upon saidpacking ring and extending through the same, conical members revoluble relatively to said pins, and a packing mounted within said packing ring and engaging said coupling section.-

11-. In a pipe hinge, the combination of terior groove near its end, a coupling con-- necting thesections, a split ring having an exterior annular groove and fitting in the groove of the pipe section, said ring having lateral openings inone side, a plurality of sectors having overlapping ends and arranged in the groove of the ring, said sectors having internal beveled surfaces, threaded stems secured to the ring and projecting into the apertures thereof, and cam nuts on the said stems.

In testlmony'whereof I 'havesigned my name to this specification in the presence of I two subscribing witnesses.

' FREDERICK LUTHER McGAHAN.

Witnesses:

D, P. HA ro'H, fLIzzm D; BRETT, I 

